Harahap, Dina Irmayanti, and Firdayanti Firdaus. “The Implementation of Field Trips As Edu-Tourism to Improve Students’ Speaking Ability at University Level”. SALTeL Journal (Southeast Asia Language Teaching and Learning) 3, no. 2 (July 27, 2020): 44–50. Accessed October 10, 2026. https://www.journal.altsacentre.org/index.php/SALTeL/article/view/55.